Combined valve cap and dust cap



Oc't. 9, 1928.

M. C. SCHWEINERT COMBINED VALVE CP AND-,DUST CAP Filed May 20. 1922 INVENTOR By Attorneys,

a Patented Oei.` 9, 1928. l

MAXIIFIILIAN CHARLES SCHWEINRT, OF NEWYORK. N. Y.. .AssIeNoRToA;4 sCHRA- y c DERS soN, INCOnrOna'rED, Or BROOKLYN, NEWYORN, A CORPORATION or NEW vomi;l

Application yfiled May 20,

This invention relates to a lcombined valve vcap and dust' cap `for pneumatic tire valves yor 'j 'Y the like; and aims to provide certain imprvel 'insid'eofthe dust cap, sothat 'if desired thel vrtwo r'caps'may begremoved andappliedasl a *In the drawings, 'whereinl have illustrated one formof theinvention i Y Figure'l is anelevaton'ofthe preferred form of cap,y f n n Fig.'2 is kan enlarged diametrical section vof Fig.1`,fshowing the cappappliedfto a'valve casina; f Fig. Skis adianetrical section of' thedust cap, the valve cap being shown in elevation. c Fig. 4 is an elevation of the inside sleeve.-

` Fig.. 5 is Fig`-2. .n f- Fig.' 6 is acrossfsection onf' the' line 6-'46 of y "Figi 7 isatop view Iof the valve cap. f i

y Referringto the drawings, let Afindicat'e a dustcap which may be of anyu suitable `conf-grurationorshapefonfits exterior. B is the valvecap lWhich-'is'adal'ited toscrewlgnjthe thereby. This insures anon-rotative connec# screwed by manipulation ofthe ydust cap. i In the construction shown the `,grooves indikcated by the reference letters F F) are formed ure 4. yThis sleeve is lretained within the can in yany suitable manner as by indentations H, which serve not only to prevent the sleeve from dropping,r out of thecap, but also to linsure a non-rotativeconnection 'between the n sleeve and cap.' Preferably the valve cap hasl a frictional Contact with the'dust capor the sleeve G sui'cient to hold it in place against ordinary movements, kwhile permitting it to slide along the interior of the cap if sufficient force is used. Such frictional Contact may be accomplished in various ways, as for instance,v l

by fitting' the flange I of the'valve' cap closely to the sleeve G, the latter having suiicient a cro'sss'ection 'on 'the' liner` 5-5 2in.

'nipplev Cl ofthe valve casing D. The valve f cap Bis provided ywith twoor morelugsjE E Y, which are adaptedtomovein groovesformed* in the dust cap or in a part or partscarried tion between the valve cap and dustcap,so`f that the valve cap Vcanfbe screwed or kunf in a sleeve G which is'shown ydetached in Figl y vides, acheap and simplelformof combined valve cap yand dust Cap, lwherein the dust cap them. l n

" It will be understood that various changes commen VALVE ANI? DUST CA2; y

1922. K seriar No. 562,502.

spring to insurea; frictionaligrp on the/cap.y y."Or the grooves Fvmay be slightly smaller than theprojections Eon, `the valve cap,vv so thata frictionalgrip is secured in this way. Pref- 1l erably both'xaregused, although the 'valvegcap may `freely'movealong'theinterior Aof the dust f Preferably'therdust cap is not'rheld Onjthe valve'casingsolelyy by its frictionalgrip ofthe vI valve cap, but is` provided with means for `holdingrit` independently by rictional contact with the'va'lve casing. {To thisend the lower'partof the sleeve G (as shown at J) ably also thelolwer endfof the sleeve is turned 1 upwardly, asshownat L,y lover a angeM formed'on the lowerpart of the dust cap, so

en cethe dust cap and lvalve ycap are capable of being Lseparated bv a. distinct' yeffort if it iis desired to do so. This permits the use of the `Avalve capr as heretofore for screwingand1111-.,l 'screwmgthe va'lveilnsidesby, means of the usual screw-,driver projectionpO `formed ion the'fvalve capwyTopermit the separation of the two. thezslotsf-.or grooves Fv of the sleeve `are continueddown to the bottom of the lat-r iter, `and-the frictional gripvping'portion Jis so proportioned that by pulling smartly on the du'stcap while the valve cap is screwed in po` `sition,`the dust capis caused to ride over-the n ilange I on the valve cap', thus separating the two." Theconstruction thus described provides afstructure in which the lvalve cap will normallymove with suliicient friction to in- Vsure its' easyl application to the valve casing by manipulation of the dust cap.` while at the 'same time it resists separation of they two unless an intentional effort is made to separate may be. madein the structure thus described y,isbent?inwardly to ,grip the @valve casing,- Y therefbeinggconsiderable spring` in the yloiifur-v cated lsleeveand an `effective :frictional grip isthus obtainedon the-valve casing- Prefervalve cap may beirremovably secured within the dust; cap if desired, but by preersleeve cut to form grooves, and a valve cap v having lugs sliding in said grooves.

3. A combined valve cap and dust cap, comprising a dust cap having an interior sleeve adapted to frictionally engage a valve cap.

4. A combined valve cap and dust cap, comprising a dust cap having an interior sleevel and grooves in said sleeve, said sleeve being adapted to engage portionsV oithe valve cap'to prevent relative rotation, andsaid sleeve frictionally engaging said valve casing. I

5. A combined valve cap and dust cap, comprising a dust cap having an interior sleeve and grooves in said sleeve, said sleeve being adapted to engage portions of the valve cap to prevent relative rotation, and said sleeve frictionally engaging said valvecasing by contact with the body of the casinU.

6. A combined valve cap and dust cap, comprising a dust cap having an interior sleeve and grooves in said sleeve, said sleeve being adaptedto engage portions of the valve cap to prevent relative rotation, and said sleeve frictionally engaging said valve cap by Contact between the Walls of said grooves and said cap. Y

7. A combined valve cap and dust cap, comprising a dust cap having an interior sleeve,`a valve cap nonrotatively held by said sleeve and said sleeve having portions adapted to engage a valve casing to hold it frictionally thereon. Y

S. A combined valve cap and dust cap,

comprising a dust cap having an interior sleeve formed with grooves or slots therein,

`a valve cap having projections moving in said grooves or slots, said sleeve having means or trlctionally engaging a valve casing.

9. A combined valve cap and dust cap,

'comprising a dust cap having an interior sleeve formed with grooves or slots therein, a valve cap having projections moving in said grooves or slots, said sleeve having portions of smaller diameter adapted to engage a valve casing.

10.*A combined valve cap and dust cap, comprising a dust cap having an interior sleeve, having slots extending to the bottom thereof, and the valve cap having lugs adapt-- ed to move along said slots until the caps are separated.

11. A combined valve cap and dust cap,

`comprising Va dust cap having an interior sleeve having grooves or slots formed therein, thevalve cap having lugs movable along said slots, and the sleeve having restricted portions near its bottom adapted to engagea valve casing. #fil 1Q. A dust cap having an elongated sleeve `held therein formed withv slots, and a rcstricted portion near its bottom, adapted to trictio'nally engage a valve'casine'.`

13. A valve cap having lugs at its sides adapted to vengage another part, whereby the valve cap may be rotated. j

14. A combined dust cap and valve cap comprising a dust cap and a valve cap adapted to move longitudinally Within the dust cap with a degree of friction sniioient to hold the valve cap in any adjusted posit-ion within the dust cap, and means providing a greater degree of friction between ythe two normally opposing but permitting complete separation of the valve cap and dust cap Without injury,

MAXIMILIAN CHARLES SCHWEINERT. 

